Effect of Mental Fatigue on Postural Sway in Healthy Older Adults and Stroke Populations
The aim of this study was to examine the effect of mental fatigue on postural sway under different sensory conditions in healthy older adults and in persons with chronic stroke (PwCS). Thirty healthy older adults (> 60 years old), randomly separated into experimental and control groups, as well a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Brain Sciences |
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| Online Access: | https://www.mdpi.com/2076-3425/10/6/388 |
| _version_ | 1827714714810974208 |
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| author | Gonzalo Varas-Diaz Lakshmi Kannan Tanvi Bhatt |
| author_facet | Gonzalo Varas-Diaz Lakshmi Kannan Tanvi Bhatt |
| author_sort | Gonzalo Varas-Diaz |
| collection | DOAJ |
| description | The aim of this study was to examine the effect of mental fatigue on postural sway under different sensory conditions in healthy older adults and in persons with chronic stroke (PwCS). Thirty healthy older adults (> 60 years old), randomly separated into experimental and control groups, as well as 15 PwCS participated in this study. Experimental groups were asked to stand on a force platform wearing seven inertial sensors while performing the Sensory Organization Test (SOT) under two cognitive conditions (single- and dual-task) before and after a mental fatigue task (stop-signal task for 60 min). The control group performed the same protocol before and after watching a movie for 60 min. Changes in subjective fatigue was assessed by the NASA Task Load Index and psychophysiological workload was assessed by heart rate variability (HRV). Postural sway was assessed by calculating the Jerk and root mean square (RMS) of center of mass (COM). Higher Jerk and RMS of COM (<i>p</i> < 0.05) were observed after the mental fatigue task in both healthy older adults and PwCS during SOT, which was not observed in the control group (<i>p</i> > 0.05). Additionally, postural sway increased in the three groups as the SOT conditions became more challenging. Our results indicate that mental fatigue, induced by sustained cognitive activity, can impair balance during SOT in older adult and stroke populations. |
| first_indexed | 2024-03-10T19:02:28Z |
| format | Article |
| id | doaj.art-abc5d819ce534f538cf28d334aba2463 |
| institution | Directory Open Access Journal |
| issn | 2076-3425 |
| language | English |
| last_indexed | 2024-03-10T19:02:28Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Brain Sciences |
| spelling | doaj.art-abc5d819ce534f538cf28d334aba24632023-11-20T04:19:47ZengMDPI AGBrain Sciences2076-34252020-06-0110638810.3390/brainsci10060388Effect of Mental Fatigue on Postural Sway in Healthy Older Adults and Stroke PopulationsGonzalo Varas-Diaz0Lakshmi Kannan1Tanvi Bhatt2Department of Physical Therapy, University of Illinois at Chicago, Chicago, IL 60612, USADepartment of Physical Therapy, University of Illinois at Chicago, Chicago, IL 60612, USADepartment of Physical Therapy, University of Illinois at Chicago, Chicago, IL 60612, USAThe aim of this study was to examine the effect of mental fatigue on postural sway under different sensory conditions in healthy older adults and in persons with chronic stroke (PwCS). Thirty healthy older adults (> 60 years old), randomly separated into experimental and control groups, as well as 15 PwCS participated in this study. Experimental groups were asked to stand on a force platform wearing seven inertial sensors while performing the Sensory Organization Test (SOT) under two cognitive conditions (single- and dual-task) before and after a mental fatigue task (stop-signal task for 60 min). The control group performed the same protocol before and after watching a movie for 60 min. Changes in subjective fatigue was assessed by the NASA Task Load Index and psychophysiological workload was assessed by heart rate variability (HRV). Postural sway was assessed by calculating the Jerk and root mean square (RMS) of center of mass (COM). Higher Jerk and RMS of COM (<i>p</i> < 0.05) were observed after the mental fatigue task in both healthy older adults and PwCS during SOT, which was not observed in the control group (<i>p</i> > 0.05). Additionally, postural sway increased in the three groups as the SOT conditions became more challenging. Our results indicate that mental fatigue, induced by sustained cognitive activity, can impair balance during SOT in older adult and stroke populations.https://www.mdpi.com/2076-3425/10/6/388mental fatiguepostural swaybalance control |
| spellingShingle | Gonzalo Varas-Diaz Lakshmi Kannan Tanvi Bhatt Effect of Mental Fatigue on Postural Sway in Healthy Older Adults and Stroke Populations Brain Sciences mental fatigue postural sway balance control |
| title | Effect of Mental Fatigue on Postural Sway in Healthy Older Adults and Stroke Populations |
| title_full | Effect of Mental Fatigue on Postural Sway in Healthy Older Adults and Stroke Populations |
| title_fullStr | Effect of Mental Fatigue on Postural Sway in Healthy Older Adults and Stroke Populations |
| title_full_unstemmed | Effect of Mental Fatigue on Postural Sway in Healthy Older Adults and Stroke Populations |
| title_short | Effect of Mental Fatigue on Postural Sway in Healthy Older Adults and Stroke Populations |
| title_sort | effect of mental fatigue on postural sway in healthy older adults and stroke populations |
| topic | mental fatigue postural sway balance control |
| url | https://www.mdpi.com/2076-3425/10/6/388 |
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